Hologram Hammer
Hologram Hammer
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Description
Description
Hologram Hammer Coral Frag
The Hologram Hammer is a premium Euphyllia coral known for its shifting, multi-tonal colouration that appears to change under different lighting angles. With flashes of green, gold, blue, and subtle rainbow hues across its hammer-shaped tips, this coral delivers a true “holographic” effect that makes it an immediate focal point in any reef aquarium.
Paired with constant, flowing movement, the Hologram Hammer offers standout visual impact while retaining the dependable care profile Euphyllia corals are loved for.
Natural Habitat & Distribution
Hammer corals (Euphyllia ancora / Euphyllia paraancora) are naturally found throughout the Indo-Pacific, including:
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Indonesia
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Australia (Great Barrier Reef)
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Fiji and Tonga
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The Philippines
They typically inhabit sheltered reef slopes and lagoon environments, where light levels are moderate and water movement is gentle to indirect.
A Brief History
Hammer corals have long been a cornerstone of the reef hobby due to their movement, resilience, and distinctive form. As LED lighting advanced, rare colour morphs with layered fluorescence and shifting tones became highly sought after.
“Hologram” variants are prized for their ability to display multiple colours simultaneously, creating depth and visual complexity that stands out even in mature, coral-dense reef systems.
Appearance & Growth
Classed as an LPS (Large Polyp Stony) coral, the Hologram Hammer features long, fleshy tentacles ending in pronounced hammer-shaped tips.
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Multi-tonal colouration with holographic effect
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Strong fluorescence under blue lighting
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Excellent polyp extension when healthy
Growth is steady in stable reef systems, with heads dividing over time.
Placement & Lighting
The Hologram Hammer performs best under moderate lighting, which allows its layered colours to fully develop.
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Lighting: Medium
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Best placed in the mid to lower areas of the aquarium
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Excessive light may wash out colour or stress tissue
Flow Requirements
Provide gentle to moderate, indirect flow. Tentacles should sway naturally without being blasted by direct current.
Water Chemistry
Stable reef parameters are essential for long-term success. Maintain consistent levels of:
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Calcium
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Alkalinity
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Magnesium
Along with stable salinity and temperature. Regular testing and water changes are recommended.
Feeding
While largely photosynthetic, the Hologram Hammer benefits from occasional feeding, including:
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Small meaty foods (mysis, brine shrimp)
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LPS-specific coral foods
Feeding once or twice weekly can enhance growth and colour depth.
Temperament & Spacing
Hammer corals are semi-aggressive and may extend sweeper tentacles at night.
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Allow adequate spacing around the frag
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Avoid placing too close to other Euphyllia or delicate corals
Frag Size & Natural Variation
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Frag size: Typically 1–2 heads
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Colour balance and intensity may vary between frags and shift depending on lighting and tank conditions.
Care Summary
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Care Level: Moderate
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Flow: Low–Medium
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Lighting: Medium
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Temperament: Semi-Aggressive
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WYSIWYG
Every featured frag is photographed individually, so the coral you see is exactly the one you’ll receive. No stock images, no substitutions — just honest, WYSIWYG frags grown and cared for in our systems.